Home / 186,023.52-256,284.72-128,607.84

Finding the Fourth Proportional to 186,023.52, 256,284.72 and 128,607.84

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Solution

The fourth proportional to 186,023.52, 256,284.72 and 128,607.84 is: 177,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,023.52 : 256,284.72 = 128,607.84 : x
  2. Step 2: Convert to fraction form
    186,023.52/256,284.72 = 128,607.84/x
  3. Step 3: Cross multiply
    186,023.52x = 256,284.72 × 128,607.84
  4. Step 4: Simplify right side
    186,023.52x = 32,960,224,264.20
  5. Step 5: Solve for x
    x = 32,960,224,264.20/186,023.52
  6. Step 6: Final answer
    x = 177,183.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.